Window-counterbalancing device



Patented Aug. 31, 1926.

UNITED STATES BERTRAM 'J. GOLDSMITH, of NEW roan, n.

Y., ASSIGNOR, BY MESNE ASSIGNMENTS,

TO PERFECT WINDOW REGULATOR GORIPDRATION, OF LONG ISLAND CITY, NEW YORK,A. CORPORATION OF DELAWARE.

\VINDOW-COUNTERBALANCING DEVICE.

Application filed July 26, 1924. Serial No. 728,311.

My invention relates to windows of the type .which are verticallyslidable in any suitable frame and has for its principal object theproduction of a simple and effective counterbalance for the window whichmay be installed at small cost. v

To the above ends my invention consists in the combination with a windowof the novel. counterbalance hereinafter more particularly described andthen specified in the claims.

In the accompanying drawing illustrating a practical embodiment of theinvention:

Fig. 1 is a front elevation of a window frame and window showing myimproved device in conjunction therewith.

Fig. 2 is a vertical cross-section on the line 22 of Fig. 3.

Fig. 3 is a front elevation of a portion of the window and window frameshowing the window in a difierent position from that shown in Fig. 1.

Referring in detail to the several figures of the drawing:

1 indicates the side members of a rectangularly-shaped window frame, 2the upper member and 3 the lower member. Said side members 1 areprovided with suitable guideways 4 suitably receiving therein a windowpane 5 which may be either a framed or frameless pane as desired. Thelower edge of the window 5 is seated in a channel 6 which is secured tothe window in any desirable manner. Fastened to said channel 6 anddepending downwardly therefrom is an angle piece 7 to which is pivotedan arm 8 having a short extension 9 extending substantially at rightangles to said arm. Secured to the end of said short extension 9 as wellas to a suitable hook on the channel 6 and adjacent an end thereof is aspiral spring 10 which constantly exerts an effort on the arm 8, as isobvious, tending to rotate the same on its pivot in a counter-clockwisedirection.

11 indicates an ordinary lock board or other supporting plate preferablymade of steel which extends across the frame from one of the sidemembers 1 to the other and which is secured thereto in any manner. Saidlock board or plate if desired may con stitute a portion of the frontwall of the window well into which the window is slidable in saidguideways 4. The lock board or of which is pivoted to the end of the arm8 while the other end is fulcrumed to a shaft extending from the lockboard 11 to the angle piece 13. As will be obvious, the

spring lOwhich tends'to swing the arms 8 and 14; on their pivots acts tocounterbalance the weight of the window and makes it easy to raise thesame when so desired.

Any suitable window lifting or locking device maybe used for raising andlowering the window or locking it in fixed position, the same forming nopart of the present invention.

What I claim as my invention is: 1. In a device of the characterdescribed, a window frame, a window vertically slidable. therein, an armpivoted to a fixed part of the window frame, a second arm pivoted tosaid first-named arm. and to the window at its lower edge and a springextending from said second-named arm and secured to the lower edge ofthe window.

2. In a device of the character described, a Window frame including awindow opening, a window slidable in said frame, an arm pivoted to afixed part of the window frame adjacent the lower portion of said windowopening, a second arm pivoted to said firstnamed arm and to said window,an extension on said second arm extending substantially perpendicularlyfrom said arm and a spring secured to said extension and to said window.

3. In a device of the character described, a window frame provided witha window opening and with guideways in the side members thereof, awindow slidable in said. gui'deways, an arm pivotally secured to saidwindow adjacent the lower edge thereof and provided with an extension, acounterbalance spring having one end fastened to said extension and theother end to the lower edge of the window, a supporting member securedto said window frame adjacent the lower portion of said window openingand a second arm pivotally connected to said supporting member and tosaid said firstnamed arm. a

4. 'In a device of the character described, a window frame provided withguideways in extending across said window frame, an

outwardly extending flange on said plate, a downwardly dependingnieinber 'ias'tened to said flange and a second arm pivoted inter-'-Inediate saidplate and'sa'id-downwardly depending member and alsopivoted to the end of said first nained armll In a device of thecharacter a win'do w'franie, a window slidable therein, aimetallicwindow sill supported by, said window frame, connecting meansbetween saidwindowfsiH the lower edgeof said window and -'supportedentirely by said sill and window and a springv attached -to-said--described,

; windowi connected means and to the lower edge of said window. Y l

6. In a device of the character described, a frame, a window slidabletherein, supporting ine ans tending to maintain said window in raisedposition, saidmeans includingan arm ivo allysuppqrted by the lowerT'portimer-said window, a s ring connected to saidiarm at a pointeccentric to the pivot thereof and to 881d window for tensioning thesepartsrand means for anchoring said arm with respect to said frame, saidmeans being conecte'd to sald franie at a point above thepivotalconnection of said arm to said window for all operativepositions of saidI Si'gned at New York in the county .of- New York and State of New Yorkthis 2.5t1rday of July, A: D.- 1.924.-

" BERTRAMl-GOLDSM-iTHwV

